Wildhorse Creek

Tributary of the East Fork Big Lost River

  • Recommended Fishing Water

Wildhorse Creek in Custer County is 14.6 miles in length.

Interactive Map
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Facilities

Motor Restriction
No
Boat Ramp
No
Dock
No
Toilet
No
Campground
Yes
ADA Access
Yes

Recommended Game Fish

Species Observed in Surveys

Fish Stocking Records

Date Species Quantity General Size
2025/08/19 Rainbow Trout - Triploid 702 Catchable (6+ inches)
2025/08/07 Rainbow Trout - Triploid 527 Catchable (6+ inches)
2025/07/22 Rainbow Trout - Triploid 501 Catchable (6+ inches)
2025/07/08 Rainbow Trout - Triploid 515 Catchable (6+ inches)
2025/06/18 Rainbow Trout - Triploid 496 Catchable (6+ inches)
2025/06/09 Rainbow Trout - Triploid 519 Catchable (6+ inches)
2025/03/31 Rainbow Trout - Triploid 2,481 Catchable (6+ inches)
2024/08/20 Rainbow Trout - Triploid 386 Catchable (12-14 inches)
2024/07/30 Rainbow Trout - Triploid 513 Catchable (6+ inches)
2024/07/22 Rainbow Trout - Triploid 526 Catchable (6+ inches)
2024/07/08 Rainbow Trout - Triploid 501 Catchable (6+ inches)
2024/06/21 Rainbow Trout - Triploid 539 Catchable (6+ inches)
2024/06/04 Rainbow Trout - Triploid 548 Catchable (6+ inches)
2023/08/08 Rainbow Trout - Triploid 1,296 Catchable (6+ inches)
2023/07/20 Rainbow Trout - Triploid 707 Catchable (12-14 inches)
2023/07/06 Rainbow Trout - Triploid 1,062 Catchable (6+ inches)
2022/08/09 Rainbow Trout - Triploid 1,000 Catchable (6+ inches)
2022/07/28 Rainbow Trout - Triploid 1,000 Catchable (6+ inches)
2022/06/22 Rainbow Trout - Triploid 520 Catchable (6+ inches)
2022/06/06 Rainbow Trout - Triploid 504 Catchable (6+ inches)
2022/05/18 Rainbow Trout 243 Sub-Catchable (6-8 inches)
2021/08/31 Rainbow Trout - Triploid 504 Catchable (6+ inches)
2021/08/17 Rainbow Trout - Triploid 645 Catchable (6+ inches)
2021/07/19 Rainbow Trout - Triploid 525 Catchable (6+ inches)
2021/07/13 Rainbow Trout - Triploid 553 Catchable (12-14 inches)
2021/07/06 Rainbow Trout - Triploid 504 Catchable (6+ inches)
2021/07/01 Rainbow Trout - Triploid 1,502 Catchable (12-14 inches)
2021/06/22 Rainbow Trout - Triploid 504 Catchable (6+ inches)
2021/06/10 Rainbow Trout - Triploid 505 Catchable (6+ inches)
2020/08/27 Rainbow Trout - Triploid 518 Catchable (6+ inches)
2020/08/07 Rainbow Trout - Triploid 504 Catchable (12-14 inches)
2020/07/15 Rainbow Trout - Triploid 505 Catchable (6+ inches)
2020/06/30 Rainbow Trout - Triploid 503 Catchable (6+ inches)
2020/06/05 Rainbow Trout - Triploid 508 Catchable (6+ inches)
2020/05/21 Rainbow Trout - Triploid 532 Catchable (6+ inches)
2019/08/20 Rainbow Trout - Triploid 456 Catchable (6+ inches)
2019/08/06 Rainbow Trout - Triploid 468 Catchable (6+ inches)
2019/07/23 Rainbow Trout - Triploid 468 Catchable (6+ inches)
2019/07/09 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2019/06/25 Rainbow Trout - Triploid 899 Catchable (6+ inches)
2018/08/22 Rainbow Trout - Triploid 527 Catchable (12-14 inches)
2018/08/08 Rainbow Trout - Triploid 527 Catchable (12-14 inches)
2018/07/26 Rainbow Trout - Triploid 449 Catchable (6+ inches)
2018/07/12 Rainbow Trout - Triploid 315 Catchable (6+ inches)
2018/06/21 Rainbow Trout - Triploid 510 Catchable (6+ inches)
2018/06/12 Rainbow Trout - Triploid 400 Catchable (6+ inches)
2017/08/14 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2017/07/28 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2017/07/11 Rainbow Trout - Triploid 950 Catchable (6+ inches)
2017/06/29 Rainbow Trout - Triploid 912 Catchable (6+ inches)
2016/08/25 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2016/08/11 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2016/07/12 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2016/07/05 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2016/06/21 Rainbow Trout - Triploid 901 Catchable (6+ inches)
2016/04/13 Rainbow Trout - Triploid 1,920 Fingerling (3-6 inches)
2015/08/05 Cutthroat Trout - Yellowstone 453 Catchable (6+ inches)
2015/07/22 Rainbow Trout - Triploid 448 Catchable (6+ inches)
2015/07/08 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2015/06/24 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2015/06/16 Rainbow Trout - Triploid 748 Catchable (6+ inches)
2015/05/19 Rainbow Trout - Triploid 525 Catchable (6+ inches)
2014/08/25 Cutthroat Trout - Yellowstone 474 Catchable (6+ inches)
2014/08/11 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2014/07/28 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2014/07/15 Rainbow Trout - Triploid 466 Catchable (6+ inches)
2014/07/02 Brook Trout 503 Catchable (6+ inches)
2014/06/24 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2014/06/09 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2013/08/26 Rainbow Trout - Triploid 448 Catchable (6+ inches)
2013/08/07 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2013/07/30 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2013/07/09 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2013/06/11 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2013/05/31 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2012/08/21 Rainbow Trout - Triploid 449 Catchable (6+ inches)
2012/08/06 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2012/07/23 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2012/07/09 Rainbow Trout - Triploid 449 Catchable (6+ inches)
2012/06/25 Rainbow Trout - Triploid 455 Catchable (6+ inches)
2012/06/15 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2011/08/30 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2011/08/10 Rainbow Trout - Triploid 457 Catchable (6+ inches)
2011/08/04 Rainbow Trout - Triploid 630 Catchable (6+ inches)
2011/07/18 Rainbow Trout - Triploid 674 Catchable (6+ inches)
2011/06/15 Rainbow Trout - Triploid 484 Catchable (6+ inches)
2010/08/26 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2010/08/09 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2010/07/28 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2010/07/07 Rainbow Trout - Triploid 476 Catchable (6+ inches)
2010/06/22 Rainbow Trout - Triploid 503 Catchable (6+ inches)
2010/06/04 Rainbow Trout - Triploid 467 Catchable (6+ inches)
2009/08/20 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2009/08/06 Rainbow Trout - Triploid 350 Catchable (6+ inches)
2009/07/23 Rainbow Trout - Triploid 490 Catchable (6+ inches)
2009/07/10 Rainbow Trout - Triploid 473 Catchable (6+ inches)
2009/06/25 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2009/06/12 Rainbow Trout - Triploid 499 Catchable (6+ inches)
2008/08/25 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2008/08/11 Rainbow Trout - Triploid 352 Catchable (6+ inches)
2008/07/31 Rainbow Trout - Triploid 432 Catchable (6+ inches)
2008/07/17 Rainbow Trout - Triploid 380 Catchable (6+ inches)
2008/06/19 Rainbow Trout - Triploid 1,040 Catchable (6+ inches)
2007/08/30 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2007/07/26 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2007/07/13 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2007/06/26 Rainbow Trout - Triploid 902 Catchable (6+ inches)
2007/06/14 Rainbow Trout - Triploid 351 Catchable (6+ inches)
2006/08/21 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2006/08/07 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2006/07/18 Rainbow Trout - Triploid 440 Catchable (6+ inches)
2006/07/10 Rainbow Trout - Triploid 468 Catchable (6+ inches)
2006/06/27 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2005/08/22 Rainbow Trout - Triploid 490 Catchable (6+ inches)
2005/08/08 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2005/07/28 Rainbow Trout - Triploid 455 Catchable (6+ inches)
2005/07/18 Rainbow Trout - Triploid 468 Catchable (6+ inches)
2005/07/06 Rainbow Trout - Triploid 375 Catchable (6+ inches)
2005/06/17 Rainbow Trout - Triploid 468 Catchable (6+ inches)
2004/08/10 Cutthroat Trout - Yellowstone 3,200 Catchable (6+ inches)
2004/07/22 Rainbow Trout - Triploid 451 Catchable (6+ inches)
2004/07/08 Rainbow Trout - Triploid 446 Catchable (6+ inches)
2004/06/24 Rainbow Trout - Triploid 588 Catchable (6+ inches)
2004/06/10 Rainbow Trout - Triploid 475 Catchable (6+ inches)
2003/08/19 Rainbow Trout - Triploid 414 Catchable (6+ inches)
2003/08/05 Rainbow Trout - Triploid 570 Catchable (6+ inches)
2003/07/22 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2003/07/11 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2003/06/24 Rainbow Trout - Triploid 494 Catchable (6+ inches)
2003/06/09 Rainbow Trout - Triploid 450 Catchable (6+ inches)
2002/08/19 Rainbow Trout 533 Catchable (6+ inches)
2002/08/05 Rainbow Trout 553 Catchable (6+ inches)
2002/07/23 Rainbow Trout 550 Catchable (6+ inches)
2002/07/09 Rainbow Trout 540 Catchable (6+ inches)
2002/06/24 Rainbow Trout 450 Catchable (6+ inches)
2002/06/11 Rainbow Trout 450 Catchable (6+ inches)
2001/08/23 Rainbow Trout 450 Catchable (6+ inches)
2001/08/09 Rainbow Trout 450 Catchable (6+ inches)
2001/07/26 Rainbow Trout 450 Catchable (6+ inches)
2001/07/12 Rainbow Trout 449 Catchable (6+ inches)
2001/06/28 Rainbow Trout 450 Catchable (6+ inches)
2000/08/31 Rainbow Trout 600 Catchable (6+ inches)
2000/08/17 Rainbow Trout 600 Catchable (6+ inches)
2000/07/25 Rainbow Trout 450 Catchable (6+ inches)
2000/07/11 Rainbow Trout 450 Catchable (6+ inches)
2000/06/27 Rainbow Trout 450 Catchable (6+ inches)
2000/06/14 Rainbow Trout 450 Catchable (6+ inches)
1999/08/24 Rainbow Trout 350 Catchable (6+ inches)
1999/08/10 Rainbow Trout 487 Catchable (6+ inches)
1999/07/22 Rainbow Trout 517 Catchable (6+ inches)
1999/07/08 Rainbow Trout 510 Catchable (6+ inches)
1999/07/02 Rainbow Trout 325 Catchable (6+ inches)
1999/06/15 Rainbow Trout 319 Catchable (6+ inches)
1998/08/27 Rainbow Trout 500 Catchable (6+ inches)
1998/08/10 Rainbow Trout 500 Catchable (6+ inches)
1998/07/23 Rainbow Trout 520 Catchable (6+ inches)
1998/07/09 Rainbow Trout 500 Catchable (6+ inches)
1998/06/25 Rainbow Trout 340 Catchable (6+ inches)
1997/08/28 Rainbow Trout 341 Catchable (6+ inches)
1997/08/14 Rainbow Trout 334 Catchable (6+ inches)
1997/07/24 Rainbow Trout 334 Catchable (6+ inches)
1997/07/10 Rainbow Trout 334 Catchable (6+ inches)
1996/08/12 Rainbow Trout 1,000 Catchable (6+ inches)
1996/07/30 Rainbow Trout 508 Catchable (6+ inches)
1996/07/17 Rainbow Trout 525 Catchable (6+ inches)
1996/07/02 Rainbow Trout 500 Catchable (6+ inches)
1996/06/25 Rainbow Trout 504 Catchable (6+ inches)
1995/08/21 Rainbow Trout 1,008 Catchable (6+ inches)
1995/08/08 Rainbow Trout 1,008 Catchable (6+ inches)
1995/07/26 Rainbow Trout 526 Catchable (6+ inches)
1995/07/12 Rainbow Trout 506 Catchable (6+ inches)
1995/07/05 Rainbow Trout 525 Catchable (6+ inches)
1995/06/30 Rainbow Trout 525 Catchable (6+ inches)
1994/08/18 Rainbow Trout 1,008 Catchable (6+ inches)
1994/08/04 Rainbow Trout 1,004 Catchable (6+ inches)
1994/07/21 Rainbow Trout 711 Catchable (6+ inches)
1994/07/07 Rainbow Trout 680 Catchable (6+ inches)
1994/06/30 Rainbow Trout 756 Catchable (6+ inches)
1994/06/09 Rainbow Trout 750 Catchable (6+ inches)
1993/08/17 Rainbow Trout 1,014 Catchable (6+ inches)
1993/08/04 Rainbow Trout 1,067 Catchable (6+ inches)
1993/07/21 Rainbow Trout 1,008 Catchable (6+ inches)
1993/07/06 Rainbow Trout 1,000 Catchable (6+ inches)
1993/06/30 Rainbow Trout 704 Catchable (6+ inches)
1993/06/16 Rainbow Trout 792 Catchable (6+ inches)
1992/08/06 Rainbow Trout 1,050 Catchable (6+ inches)
1992/07/10 Rainbow Trout 760 Catchable (6+ inches)
1992/06/18 Rainbow Trout 760 Catchable (6+ inches)
1992/06/04 Rainbow Trout 822 Catchable (6+ inches)
1992/05/20 Rainbow Trout 960 Catchable (6+ inches)
1991/08/22 Rainbow Trout 1,000 Catchable (6+ inches)
1991/08/07 Rainbow Trout 1,025 Catchable (6+ inches)
1991/07/26 Rainbow Trout 1,000 Catchable (6+ inches)
1991/07/12 Rainbow Trout 750 Catchable (6+ inches)
1991/06/28 Rainbow Trout 1,120 Catchable (6+ inches)
1991/06/18 Rainbow Trout 1,000 Catchable (6+ inches)
1990/10/25 Arctic Grayling 3,500 Fingerling (3-6 inches)
1990/08/23 Rainbow Trout 1,000 Catchable (6+ inches)
1990/08/09 Rainbow Trout 1,020 Catchable (6+ inches)
1990/07/23 Rainbow Trout 750 Catchable (6+ inches)
1990/07/09 Rainbow Trout 750 Catchable (6+ inches)
1990/06/07 Rainbow Trout 375 Catchable (6+ inches)
1989/10/31 Arctic Grayling 1,768 Fry (0-3 inches)
1989/08/16 Rainbow Trout 297 Catchable (6+ inches)
1989/08/07 Rainbow Trout 1,080 Catchable (6+ inches)
1989/07/24 Rainbow Trout 900 Catchable (6+ inches)
1989/07/10 Rainbow Trout 1,050 Catchable (6+ inches)
1989/06/05 Rainbow Trout 1,530 Catchable (6+ inches)
1988/10/18 Arctic Grayling 2,000 Fry (0-3 inches)
1988/08/10 Rainbow Trout 1,955 Catchable (6+ inches)
1988/07/19 Rainbow Trout 980 Catchable (6+ inches)
1988/07/05 Rainbow Trout 980 Catchable (6+ inches)
1988/06/16 Rainbow Trout 1,610 Catchable (6+ inches)
1987/07/27 Rainbow Trout 1,540 Catchable (6+ inches)
1987/07/01 Rainbow Trout 1,320 Catchable (6+ inches)
1987/06/10 Rainbow Trout 990 Catchable (6+ inches)
1987/06/01 Rainbow Trout 220 Catchable (6+ inches)
1986/07/23 Rainbow Trout 2,010 Catchable (6+ inches)
1986/06/18 Rainbow Trout 2,001 Catchable (6+ inches)
1985/05/30 Rainbow Trout 1,360 Catchable (6+ inches)
1984/06/29 Rainbow Trout 4,900 Catchable (6+ inches)
1983/08/10 Rainbow Trout 1,996 Fingerling (3-6 inches)
1983/07/14 Rainbow Trout 2,088 Catchable (6+ inches)
1982/08/19 Rainbow Trout 2,014 Catchable (6+ inches)
1982/07/12 Rainbow Trout 1,840 Catchable (6+ inches)
1981/08/03 Rainbow Trout 2,250 Catchable (6+ inches)
1981/06/24 Rainbow Trout 1,449 Catchable (6+ inches)
1980/08/29 Rainbow Trout 270 Catchable (6+ inches)
1980/08/13 Rainbow Trout 875 Catchable (6+ inches)
1980/07/30 Rainbow Trout 700 Catchable (6+ inches)
1980/07/24 Rainbow Trout 840 Catchable (6+ inches)
1980/07/16 Rainbow Trout 1,020 Catchable (6+ inches)
1980/07/01 Rainbow Trout 697 Catchable (6+ inches)
1979/08/27 Rainbow Trout 390 Catchable (6+ inches)
1979/08/01 Rainbow Trout 1,320 Catchable (6+ inches)
1979/07/10 Rainbow Trout 1,320 Catchable (6+ inches)
1979/06/07 Rainbow Trout 720 Catchable (6+ inches)
1978/08/23 Rainbow Trout 440 Catchable (6+ inches)
1978/08/07 Rainbow Trout 1,980 Catchable (6+ inches)
1978/07/13 Rainbow Trout 840 Catchable (6+ inches)
1977/07/29 Rainbow Trout 1,470 Catchable (6+ inches)
1976/08/13 Rainbow Trout 1,680 Catchable (6+ inches)
1976/05/22 Rainbow Trout 2,280 Catchable (6+ inches)
1975/08/27 Rainbow Trout 1,920 Catchable (6+ inches)
1975/07/24 Rainbow Trout 2,340 Catchable (6+ inches)
1975/07/02 Rainbow Trout 1,500 Catchable (6+ inches)
1974/08/16 Rainbow Trout 1,440 Catchable (6+ inches)
1974/07/16 Rainbow Trout 1,600 Catchable (6+ inches)
1974/07/02 Rainbow Trout 2,280 Catchable (6+ inches)
1973/08/01 Rainbow Trout 1,700 Catchable (6+ inches)
1973/07/13 Rainbow Trout 1,920 Catchable (6+ inches)
1973/06/20 Rainbow Trout 1,800 Catchable (6+ inches)
1973/06/05 Rainbow Trout 1,920 Catchable (6+ inches)
1972/08/23 Rainbow Trout 1,800 Catchable (6+ inches)
1972/08/16 Rainbow Trout 1,680 Catchable (6+ inches)
1972/08/02 Rainbow Trout 1,920 Catchable (6+ inches)
1972/07/24 Rainbow Trout 2,040 Catchable (6+ inches)
1972/06/28 Rainbow Trout 1,980 Catchable (6+ inches)
1971/08/25 Rainbow Trout 2,160 Catchable (6+ inches)
1971/07/30 Rainbow Trout 2,160 Catchable (6+ inches)
1971/07/13 Rainbow Trout 1,800 Catchable (6+ inches)
1971/06/28 Rainbow Trout 2,280 Catchable (6+ inches)
1970/08/14 Rainbow Trout 1,800 Catchable (6+ inches)
1970/07/29 Rainbow Trout 2,220 Catchable (6+ inches)
1970/07/06 Rainbow Trout 1,920 Catchable (6+ inches)
1970/06/17 Rainbow Trout 2,040 Catchable (6+ inches)
1969/08/22 Rainbow Trout 2,280 Catchable (6+ inches)
1969/08/08 Rainbow Trout 2,280 Catchable (6+ inches)
1969/07/29 Rainbow Trout 2,100 Catchable (6+ inches)
1969/07/03 Rainbow Trout 2,600 Catchable (6+ inches)
1968/08/28 Rainbow Trout 2,100 Catchable (6+ inches)
1968/07/31 Rainbow Trout 1,560 Catchable (6+ inches)
1968/06/27 Rainbow Trout 1,740 Catchable (6+ inches)
1968/05/28 Rainbow Trout 1,320 Catchable (6+ inches)
Source: IDFG Fish Stocking Database.

Licenses and Tags

Learn more about IDFG Licenses, Tags & Permits
 

Fishing Rules, 2025 - 2027

All Waters Open All Year

Except as modified in Special Rules
Fishing is not allowed within the posted upstream and downstream boundary of any fish weir or trap.

Daily Bag Limits

The following daily bag limits apply to all waters within each region except as modified in the Special Rules. The possession limit is 3-times the daily bag limit.

Special Rules

Big Lost River and tributaries
  • December 1 through Friday before Memorial Day weekend – trout – catch-and-release; (except Brook Trout); whitefish – catch-and-release
  • Saturday of Memorial Day weekend through November 30 - trout limit is 6; whitefish – catch-and-release
Upper Snake Region Bag Limits
Bass (Largemouth and Smallmouth)

  • Bass - no bag, length, or possession limits

Brook Trout

  • Brook Trout limit is 25
  • Harvest allowed during any open season unless otherwise noted under Special Rules - if gear or bait restrictions are listed, they apply when fishing for Brook Trout

Bull Trout

  • Bull trout - catch-and-release

Kokanee

  • Kokanee limit is 15

Sturgeon

  • Sturgeon - catch-and-release
  • Sturgeon must not be removed from the water and must be released upon landing
  • Barbless hooks, sliding swivel device to secure a weight, and a lighter test line to secure weight to sliding swivel device are required. See fishing regulations for details

Tiger Muskie

  • Tiger Muskie limit is 2, none under 40 inches

Trout includes Brown Trout, Golden Trout, Lake Trout, Arctic Grayling, Cutthroat Trout, Rainbow Trout, and trout hybrids (e.g. Tiger Trout)

  • Trout limit is 6, all species combined
  • Bull Trout and Brook Trout are listed separately

Walleye (Have not been stocked intentionally in this Region. May be harmful to existing fisheries.)

  • No bag, length, or possession limits, harvest is encouraged

Whitefish

  • Whitefish limit is 25 - see Big Lost River exception
  • Harvest allowed during any open season unless otherwise noted under Special Rules - if gear or bait restrictions are listed, they apply when fishing for whitefish

Protected Nongame Fish including Bluehead Sucker (also known as Green Sucker)

  • May not be harvested or possessed

All Other Fish Species includes bullfrogs and crayfish

  • No bag, length or possession limit
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